Pop stars Justin Bieber and Selena Gomez hung out with Phish at their Long Beach Arena show last night south of L.A. According to The Hollywood Reporter, the Biebs was brought to the concert by his musical director, who's apparently a huge Phish groupie!

They rocked out to the first long set and then went backstage to meet the band during intermission! Justin got introduced to Phish bassist Mike Gordon, guitarist and frontman Trey Anastasio, and dished about music.